Lenovo ThinkPad T400 T500 T410 T510 500GB 7200rpm 2.5" SATA Hard Drive with Caddy Used, Refurbished, Fully Tested, Wiped and Formatted NTFS Hard Drive Type - 2.5" SATA, Rotation Speed: 7200rpm Hard Drive Capacity - 500GB Comes with caddy and rubber guide rails Photo is representative only - hard drive make and model varies but will match specifications stated in the listing